A private resort island in the Semporna archipelago of Sabah, Malaysian Borneo, Mataking is a macro-and-reef destination in the Celebes Sea best known for its house reef, gentle wall dives, year-round green and hawksbill turtles, and Malaysia's first underwater 'post office' mounted on a deliberately sunk cargo wreck.
Destination info
Conditions, highlights, and the resident marine life.
Conditions
Water and air temperature across the year.
WaterAirDryShoulderWet
Description
Mataking sits in the northeast Semporna Priority Conservation Area, part of the Coral Triangle, roughly an hour by boat from Semporna town and about 80 minutes from world-famous Sipadan across the deep Alice Channel. A single dive resort occupies the island, so its 20-plus sites are quiet and undisturbed. The diving is two-sided: the northern face has vertical walls and stronger currents (North Point's cleaning station at ~37 m draws the occasional pelagic), while the sheltered southern and house reefs offer calm, beginner-friendly dives carpeted in soft and hard coral. Mataking is strongest on macro and reef life rather than big animals — nudibranchs, frogfish, blue-ringed octopus, cuttlefish, mandarinfish, and pygmy seahorses are the draw, alongside reliable green turtles resting before crossing to Sipadan to mate. The signature site is the Mataking 1, a 40-foot wooden cargo ship sunk on the house reef in March 2006 as an artificial reef and home to a working underwater post box at around 20 m. Water sits at 25–29°C year-round with 20–40 m visibility; conditions are best February to November, peaking April to June. Honest expectation-setting: pelagic action is occasional here, far less reliable than nearby Sipadan.
Highlights
What makes this dive worth the trip.
Mataking hosts Malaysia's first underwater post office: a mailbox mounted on the wheelhouse of the Mataking 1, a 40-foot wooden cargo ship the resort deliberately sank on its house reef in March 2006 as an artificial reef. Divers seal postcards in waterproof bags and 'post' them at around 20 m, and a 'postman diver' clears the box twice a week.
Both green and hawksbill turtles nest on Mataking year-round, with green-turtle nesting peaking in July and August when tens of females can come ashore in a single night. The resort runs a turtle hatchery under an MOU with the Sabah Wildlife Department; in 2019 alone roughly 11,000 eggs were taken into the hatchery and about 8,000 hatchlings released.
In May 2026 a new conservation project with the Sabah Wildlife Department and WWF-Malaysia launched on Mataking, using ShellBank DNA analysis and satellite tracking to protect critically endangered hawksbill turtles. More than 460 hawksbill nests were recorded on the island between 2009 and 2025, including 119 nests in 2025 alone — making it one of Sabah's most important hawksbill nesting sites.
Marine life
43 species you’re likely to encounter on a dive here.
Dive sites
9 signature sites at this destination.
House Reef (Jetty)
A gently sloping coral reef directly off the resort's dive centre, walkable from the beach, dropping from about 5 m to a wall reaching 50 m. One of Mataking's best macro and night dives: nudibranchs, cuttlefish, lionfish, stonefish, squat lobsters, and blue-ringed octopus on the shallows, with jacks, trevally, batfish, groupers, a giant grouper, and a roughly 3 m giant moray eel along the slope. A resident barracuda nicknamed 'Charlie' patrols the jetty. The reef 'lights up' at night with strange small critters, making it a photographer's favourite.
5–30 mbeginnerShoreLightVisibility 10–20 m
North Point
A vertical wall on Mataking's exposed northern face, the island's most demanding site and the one with genuine pelagic potential. A cleaning station sits at around 37 m and can produce eagle rays, grey reef sharks, the occasional manta or passing pelagic, plus green turtles, ribbon eels, and coral catsharks. Strong currents sweep the wall, so the site is reserved for advanced divers with good deep and drift experience.
15–40 madvancedDay boatStrongVisibility 20–40 m
Garden of Eden
A gentle coral slope bottoming out around 20–25 m, named for its lush, brightly coloured carpet of soft corals and feather stars. A relaxed dive with brilliant visibility, good for macro and reef alike: angelfish, Moorish idols, surgeonfish, cleaner wrasse, gobies, nudibranchs, leaf scorpionfish, and blue-spotted rays on the sand, with morays in the coral. Mild current suits all levels.
8–25 mbeginnerDay boatLightVisibility 15–30 m
Coral Garden
A vertical wall draped in coral in excellent condition, best dived in the afternoon. Moderate currents along the wall can bring the occasional manta ray cruising in the blue, while the reef itself is a healthy mix of hard and soft coral. An intermediate-level wall dive.
8–30 mintermediateDay boatModerateVisibility 15–30 m
Hump Head Point
A reef of about 5–25 m with healthy coral, named for the bumphead (hump-head) parrotfish that frequent it. Generally mild currents make it accessible across experience levels; alongside the parrotfish expect lionfish, shrimp, crabs, and bluefin trevally. Best November and February.
5–25 mbeginnerDay boatLightVisibility 15–30 m
Gavin's Playground
A shallow macro and muck site (around 8 m) that is one of Mataking's critter highlights, densely populated with mandarinfish, mantis shrimp, and a wide range of nudibranchs over rubble and sand. A favourite for macro photographers and dusk dives when the mandarinfish emerge to spawn.
3–12 mbeginnerDay boatLightVisibility 8–18 m
The Shipwreck (Underwater Post Office)
The resort's signature site: the Mataking 1, a 40-foot wooden cargo ship sunk on the house reef in March 2006 as an artificial reef, resting at around 20 m. A working underwater post box is mounted on its wheelhouse — divers seal postcards in waterproof bags and 'post' them, with a postman diver clearing the box twice weekly. The wreck has matured into a coral-encrusted habitat drawing groupers, parrotfish, sweetlips, lionfish, clownfish, wrasse, nudibranchs, gobies, morays, and resting turtles. Accessible from the house reef as an easy boat or shore dive.
12–20 mbeginnerShoreLightVisibility 15–25 m
D'Wall
A colourful wall a short speedboat hop from Mataking, dropping from about 10 m to 40 m. Despite past damage from dynamite fishing the reef has recovered into a vibrant tapestry of soft and hard corals, feather stars, sea whips, and gorgonian fans of every size and colour. A strong macro site for nudibranchs, jawfish, and frogfish (including a resident giant black frogfish), with parrotfish, bannerfish, Moorish idols, and butterflyfish on the reef. Best November and February; suited to intermediate and advanced divers.
10–40 mintermediateDay boatLightVisibility 15–30 m
Turtle Playground
One of Mataking's most popular sites, a reef of varied depth (about 5–30 m) where green turtles reliably rest and graze on the hard coral and sandy patches. Moderate, manageable currents make it an easy and safe dive for mixed-experience groups. Beyond turtles the site holds shrimp, eels, and healthy coral gardens.
5–30 mbeginnerDay boatModerateVisibility 15–25 m
Where to dive & stay
Local dive centers, resorts, and hotels.
Featured operators coming soon
Verified dive centers, resorts, and hotels around Mataking will list here — pricing, photos, and direct contact.
